what if i send transaction with high fee (185 sat/b) and said in electrum its unconfirmed parent and the parent transaction has low fee (80 sat/b) .Will the high fee transaction get stuck until the low fee transaction confirmed ??

The poster above is right: the parent transaction has to get confirmed before the child transaction can get confirmed.An exception is a Child-pays-for-parent transaction in which the child transaction pays the fee of the parent transaction so they both get confirmed at the same time.

Will the high fee transaction get stuck until the low fee transaction confirmed ??

Yes, the parent transaction has to be confirmed before your child transaction can be confirmed (Both being confirmed in the same block does work too).Basically there are 3 possibilities:

1. A miner confirms your parent TX, without confirming your child TX (In this case your child TX should get confirmed within the next blocks)2. A miner confirms both of your transaction into the same block3. Both won't get confirmed at may get dropped from the network.